WITH Hollywood’s endless summer at the halfway mark, it’s clear the public is wearying of the incessant string of blockbusters rolling off the assembly line.

Except for “Finding Nemo,” “Bruce Almighty” and “X2,” virtually every mega-movie released since May has failed to live up to its hype at the box office – if it hasn’t tanked altogether.

And even some movies with record openings – like “The Hulk,” which set the all-time mark for June – suffered steep second-week drops (70 percent for “The Hulk”), suggesting audiences are suffering from ever-shorter attention spans.

Overall, ticket sales this summer are off a whopping 7 percent from last year.

“We’ve had four weekends in a row when business was down from the year before,” said Paul Dergarabedian of Exhibitor Relations, a box-office tracking firm. “Every week, we’re looking for a film that will pull us out of the slump.”

The jury is still out on the just-opened “T3,” whose huge opening grosses were still nowhere near what the experts were predicting. But here’s a report card on the high-profile pre-July 4 releases:

WINNERS”Finding Nemo” ($275 million gross, so far): Pixar’s latest computer-animated triumph was expected to do well, but no one predicted it would become the summer’s top-grossing film – a title it may very well hold onto.

“Bruce Almighty” ($228 million): A public hungering to see Jim Carrey in a goofy comedy and an excellent trailer helped turn this into a huge hit.

“X2” ($221 million): A rare sequel that was better than the original, it got a jump on the competition by opening the season and facing no significant competition its second week.

DISAPPOINTMENTS”The Matrix Reloaded” ($272 million): Though it’s the season’s No. 2 grosser, it’s a letdown in relation to its $200 million pricetag – and expectations it would become the first $300 million R-rated flick.

“2 Fast 2 Furious” ($119 million): Even without significant competition in its second weekend, it was eating the fumes of “Finding Nemo.”

“Charlie’s Angels: Full Throttle” ($67.2 million): Columbia tried to expand beyond the first flick’s largely female fan base by going Maxim – hyping a “comeback” by Demi Moore to boot – and ended up selling a million fewer opening-weekend tickets, topped off by an ugly second-week drop.

“The Italian Job” ($84.1 million): Broke Mark Wahlberg’s string of flops and will return a tidy profit, but didn’t live up to Paramount’s hopes of a “Bourne Identity”-like sleeper – in a season without a single bona-fide big-studio sleeper.